2157150165 has 16 divisors (see below), whose sum is σ = 3452457600. Its totient is φ = 1150140992.

The previous prime is 2157150139. The next prime is 2157150173. The reversal of 2157150165 is 5610517512.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2157150165 - 2⁵ = 2157150133 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36451 + ... + 75119.

It is an arithmetic number, because the mean of its divisors is an integer number (215778600).

Almost surely, 2^2157150165 is an apocalyptic number.

It is an amenable number.

2157150165 is a deficient number, since it is larger than the sum of its proper divisors (1295307435).

2157150165 is a wasteful number, since it uses less digits than its factorization.

2157150165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42396.

The product of its (nonzero) digits is 10500, while the sum is 33.

The square root of 2157150165 is about 46445.1306920327. The cubic root of 2157150165 is about 1292.0920653546.

Adding to 2157150165 its reverse (5610517512), we get a palindrome (7767667677).

The spelling of 2157150165 in words is "two billion, one hundred fifty-seven million, one hundred fifty thousand, one hundred sixty-five".